Printing device



May 15, 1923'.

l M. J. HOFFMAN PRINTING DEVICE Filed Nov.

20, 1922 2 Sheets8 hq et 1 M. J. HOFFMAN PRINTING DEVICE May 15, 1923.

Patented May 15, I923.

NITEDSTAE ATE r OFFIC] p Mortar s3." HoFFMAiv, or onicneo, I LINo'Is.

rnlivrriveinnvrcn.

Application filed November 2c, 1922. Sam no. 601,974.

' acte rs' whichmay be set and resetto print any combinations of the type characters appearing on the type wheels. The invention has been designed particularly for use in printing amounts or prices upon coupon tickets, that is to say, sheets perforatedor scored to form detachable coupons, each group of type wheels being arrangedrto print upon a coupon, whereby blankspaces on coupons may be quickly printed with the desired information. Another object is to provide a' type carrier, containing type Wheels bearing suitable type characters and in the forml of a unitary structure, which may be stored away or conveniently placed in a, suitable printing device when used for printing coupon .tickets or other sheets.

The invention consists in the several novel features hereinafter fully set forth and claimed.

The invention is clearly illustrated in the "accompanying drawings, in which:

' Fig.' 1 is a plan, partly broken away, of. a printing device embodying a simple form of the present invention; Fig. 2 is an end view thereof; F lg-(3 is a vertical cross'section taken on line 3-3 of Fig. 1; Fig. l is an enlarged side elevation of a type carrier and type wheels, partly broken away Fig. '5 isa plan of the part seen in Fig.. 4; Fig. 6'is'a' side elevation ofone of the type wheels; Fig. 7 is anedge view thereof; Fig. '8'is a side elevation looking at the opposite side of the type wheel from that seen, in

Fig. 6; Fig. 9 is'a n end elevation of the type carrier and ity'pe wheels seen in F gs.

4 and 5; 'FigylO is a detail, vertical, cross section taken on the line 10' 10,.of Fig.- '5;

Fig. "11 is" a plan of, the printing face of a type wheel laid out flat, and Fig. 12"is afragmenta'l plan of a modified form of the invention.

Referring to said drawings, and first to the Figs. 1,2 and"3,the reference character I 12'designates a type carrier holdingbase,

preferably of elongated rectangular form, Y

which is arranged to receive and holdithe type carriers in printing pos tion. Said basemay be provided with one or more seat portions 13in its upper sidethat run length wise of the base and receive'th'e type can riers 14. The type carriers; may be; -held on Sibld. seats against accidental displacement by latches 15" c'arried"by the base 12f and arranged to be swung over the tops of the type carriers into engagement withstuds 16. The type carriers, support groups of type wheels 1 7"which contain typechar acters 18 'on theirperipheral edges. Above the type wheels is anink ribbon 1 9 which may be carried by suitablerollers 201nount ed on the base 12 and above the ink ribbon is an impression making'device 21carried by a frame 22, fulcrumed on arms 23of the base 12,which impression making device is broughtdown upon a coupon ticket or.

other sheet that is lai'dfupon the inkv ribbon and the impression from the type characters,"

w'hich'are in writing position, is thereby.

made upon thereupon ticket or other sheet.

The exact construction of the type carrier j holding base and impression making device is immaterlal, sofar as 'thls invention is con"- cerned, but has been shown for the purposes of illustration.

' Referring-now to Figs 4 to 11, inclusive, 'each' type carrier will be seento comprise two parallelspaced' bars 24;; which are held in spaced relation to each other by 'scr'ew's or rivets 2 5 and spacing members 26 that surround'the screws or rivets 25. The spacing means shown, are not material as other equivalent connecting and spacing" means may be substituted therefor; At the upper edge portions of the "bars 2.4 am; equidistant sockets, which may be formed by notching the 'bars-asat'27, and j in saidfi'iot'ches are bars '24; The shoulders formed between the '100' Y secured the supports-28hr the type wheels.

"Said supports .are'here shownin theforin of pins or rods having flattened end portionsk29 that enter and seat in 'the notches -27 -o f-'tl 1'e flattened portions and round portionsof the pins engage the-inner face of the bars2e and prevent endwise movementjof the pins. In

order to economize space s'othat the groups oftypewheels may "print" upon narrow eeupons, the groups of type wheels are-{staggered, as seen'ln Fig. '2, sothatone row. of, I

grouped type wheels print to one side of the other row I v The type wheels of each group are rotatively mounted upon an associated pin 28,

and are confined between the bars 24. When the groups are arranged in staggered fashion, as seen in Fig. 5, sleeves 30 are interposed between the groups of type Wheels and one bar 2%, as is clearly illustrated in Fig. 1). While the type wheels are rotatively mounted upon the pins 28, they are normally held against rotation thereon, by friction, for

instancef'a pad 35 of cushioned or resilient material may be supported by the carrier in position to be engaged by the lower sides of c 1 the .type wheels. The friction between the type wheels and the pad should be suflicient to hold the wheels in any position at which they areset although the friction-shouldnot be great enough to prevent any other wheels from being turned when desired. In addition to the pad, or as a substitute therefor,

characters in printing position. The print ing position of the type characters may be easily changed by turning the type wheels with a pointed instrument to bring the 'desired type characters into position,

In the form of the invention illustrated,

- in 12, the axes of the type wheels are -;inclusive and the fractions 7 3; and 5}.

placed lengthwise of the carrier bars 2%", insteadof being placed cross ways thereof as in the form illustrated in Figs. 1 to 11, in-

elusive; In the form shown in Fig. 12, cross bars 25F -are provided between thebars 2 1-, which cross bars are provided with sockets 27 in whichthe flattened ends of the pins 28 are placed. The type wheels 17 are mtatively mounted upon preferred form. I p p a a In the forms of, the invention illustrated, the type wheels contain the characters 0 to 9 In addition thereto, one type wheel of each group contains the letter V one the letter the pins, as in the I 0, one the letter I, one the letter D so that any group may be set to print the word void or any number from Oto one of five figures and containing the fractions ;l, 1} and In this way the type wheels may be set'to designate values, amounts, prices and the like I The device is particularly useful in printing coupon tickets or other sheets whereit is necessary to frequently change the amounts represented by the type characters. v

The changes maybe made very easily and quickly and =if desired, any or all of the 7 groups of type wheels may be removed from the type carriers and other type wheels bearingthis kind of characters may be substituted for their places. I

More or less variation of. the exact details of construction is possible without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exact form of the construction shown and de-- scribed, but intend,'in the following claims,

to point out all of the invention disclosed herein.

I claim as new, and desire to securerby Letters Patenti 1. In a printing device,

a base, spaced,

parallel, and connected ,type carrier bars 9 removably supported therein and spaced groups of type wheels removably secured on said bars.

,2. In a printing device, a base, parallel,

supported therein and having ,oppositely disposed sockets. at their upper edges, type wheel supports seatedin said sockets and type Wheels, arranged in groups, and rotatively mounted on said type Wheel supports. 3. In a printing device, a base, a pair-{of spaced, parallel, and connected type carrier bars, removably supported therein and having oppositely disposed notches formed in their upper edges, type wheel supports reand connected type carrier bars, removably I -lon movable seated in said notches, and type wheels, arranged in groups, rotatively mounted on said type wheel supports 4. In a printing devicefabase, a pair of spaced, parallel, and connected type carrier bars, removably supported therein and having oppositely disposed notches formed" in their upper edges, type wheelsupporting pins having reduced end portions removably seated in said notches, and type wheels arranged in groups, rotatively mounted on said type wheel supporting pins. i

I 5. In a printing device, a base, apair of spaced, parallel, and connected type carrier bars, removably supported therein and having oppositely disposed notches formed in) their upper edges, type wheel supporting pins havlng flattened end portions, removably seated inisaid"v notches, and type wheels arranged in groups, rotatively mounted on said type wheel supporting pins,

6, In a printing device, a base, spaced, parallel, and connected type carrier bar's, removably supported therein, spaced groups of type wheels removably secured on said bars and means for releasably securingthe type whe'els-ofeach group against rotation.

7. In a prlnting device, a base, space d,

parallel, and connecteditype carrier bars,

removably supported therein, spaced groups of type Wheels removably secured on said bars and co-acting means between the adjacent typewheels of each group for re1easably securing said type Wheels against rota tion relative to each other.

8. In a printing device, a base, parallel, and connected type carrier bars, .removably supported therein and having oppositely disposed sockets at their upper edges, type Wheel supportsseated in saidsockets, type Wheels, arranged in groups, and rotatively mounted on said type Wheel supports and means for releasably securing the type Wheels of each group against rotation.

9. In a printing device, av base, parallel, and connected type carrier bars, removably Wheel supports seated invsaid sockets, type wheels, arranged in,groups,.and rotatively mounted on said type Wheel supports and I co-acting means between the adjacenttype Wheels of each group for releasably securing,

said type Wheels against rotation relative to each other.

10. In a printing device,abase, "a pair of spaced, parallehand connected type carrierbars,firemovably supported therein, groups of type Wheels, removably secured on said bars in staggered relation to each other, subsupported therein and having oppositely disposed sockets at their upper edges, type 

